Node.js / PHP / dotnet / JVM projects can be bundled to a single binary file. Sure, the binaries are bigger, and they cannot run on routers, but you can easily

Node.js / PHP / dotnet / JVM projects can be bundled to a single binary file. Sure, the binaries are bigger, and they cannot run on routers, but you can easily run many of them simultaneously on RaspberryPi, which is usually the bare minimum HW people use to self-host. Performance wise, difference should be negligible for most use cases, and allows people to write software in the language that's most suited for them and the project.